As a side note this situation is changing fast if like me you are a prime shooter. with the new 20mm f/2.8, 35mm f/1.8, 50mm f/1.8 and rumored 85mm f/1.8 along with the three sigma primes the NEX-7 is a formidable tool

The Sony Zeiss 24/1.8 is probably the best lens for the NEX 7 sensor, so it's hard to mention it when discussing prime lenses that contribute to a formidable tool. For people like me who have a single prime that is on our camera 90% of the time, it's really, really hard to beat the NEX 7 and the Zeiss 24 with regard to image quality and size. I think only the RX1 exceeds it for IQ and size.